mendelevium

American  

[men-dl-ee-vee-uhm] / ˌmɛn dlˈi vi əm /

noun

Chemistry, Physics.

1. a transuranic element. Md, Mv; 101.

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mendelevium British  

/ ˌmɛndɪˈliːvɪəm /

noun

1. a transuranic element artificially produced by bombardment of einsteinium. Symbol: Md; atomic no: 101; half-life of most stable isotope, ²⁵⁸ Md: 60 days (approx.); valency: 2 or 3

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mendelevium Scientific  

/ mĕn′də-lē′vē-əm /

1. A synthetic, radioactive metallic element of the actinide series that is produced by bombarding einsteinium with helium ions. Its most stable isotope is Md 258 with a half-life of approximately 51.5 days. Atomic number 101.

2. See Periodic Table

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Etymology

Origin of mendelevium

1950–55; named after D. I. Mendeleev; see -ium

Example Sentences

The naming of elements No. 100 and No. 101, fermium and mendelevium, had caused little stir, but that relative calm soon shattered.

From The New Yorker • Dec. 27, 2019

Many are named after great scientists: einsteinium, curium, fermium, mendelevium, bohrium and rutherfordium.

From BBC • Sep. 19, 2014

No one yet understands why mendelevium 258 is so long-lived.

From Time Magazine Archive

As is often the case in science, researchers at the University of California's Lawrence Radiation Laboratory were attempting to synthesize an entirely different isotope when mendelevium 258 was created.

From Time Magazine Archive

In 1955, element 101 was named mendelevium in his honor.

From "A Short History of Nearly Everything" by Bill Bryson